Sheave device for draping fourdrinier wire



Jan. 25, 1944. .J. A. HOOVER 2,340,269

SHEAVE DEVIFCE FOR DRAPING FOURDRINIER WIRE Filed May 30, 1942.

INVENTOR Jbmv a Hearse BY APTORNEY Patented Jan. 25, 1944 UNITED STATESPATENT OFFICE SHEAVE DEVICE FOR DRAPING FOURDRINIER WIRE wareApplication May 30, 1942, Serial No. 445,236

1 Claim.

My present invention relates to an improved pulley or sheave device foruse in draping the Fourdrinier wire in place on the machine during theoperation of changing the wire. A common way of carrying out theoperation of putting on a new wire is to pass one loop of the wire overan end of the couch roll (in machines which permit of this) whereuponthe wire, which comes reeled, must be unwound. The Fourdrinier wires arecommonly received wound upon a pair of poles constituting a core.Heretofore it has been common practice to suspend the reel of wire abovethe machine by means of slings which engage the projecting ends of thesepoles. However, this practice is subject to the drawback that onoccasion the poles will slip out of the slings, to the damage of thewire and possible injury to the operator.

My present invention seeks to overcome this difiiculty by providing anovel form of pulley or sheave device one of which may be clamped toeach end of the poles of the wire, the aggregate being suspended on acable attached to a crane, while a hand wheel or other device isprovided by means of which the operator may rotate the rolls and thuspay out the wire along the bed of the machine.

My invention will be best understood by reference to the followingdetailed description taken with the annexed drawing, in which Fig. 1 isa perspective view of my improved sheave device;

Fig. 2 is a plan view showing the same in use;

Fig. 3 is an end view; while Fig. 4 shows diagrammatically the manner inwhich the Fourdrinier wire is wound when received by the paper mill.

Referring to the above, In denotes a Fourdrinier wire which is endlessand is therefore reeled doubled as shown. The core of the reel is formedby a pole II which is contained within the inner loop of the wire,whereas pole I2 is disposed immediately outside of the loop, the twopoles thus constituting a core around which the double thickness of thewire is reeled. Pole 13 is also used in the remote end loop of the wireand is not concerned in the present invention. The reeled wire havingbeen removed from its container, the ends of poles I l and H are engagedby the combination clamp and sheave device which is the subject of thepresent invention, one of such devices being required for each end ofthe pair of poles. Said device comprises a housing l5 accommodating theends of poles II and I2 and provided with two pairs of oppositelydisposed set screws l1, l1, l8, l8 for holding said poles in place.Concentrically disposed with respect to the housing 15 is a sheave 16which is attached to the housing by means of spokes l9, l9, and also bybeing welded thereto as at oppositely disposed regions 20, 20. Alsoconcentric with housing I5 is preferably a hand wheel 2| secured to saidhousing by means of spokes 22. One wall of the sheave may be cut away asat 24 to facilitate threading the cable 24a on and off of the sheave.

The sheave devices having been clamped to either end of the poleassembly, as shown in Figs. 2 and 3, the assembly is suspended from acrane, not shown, by means of cables of which one, 24a, is seen. Afterthe free loop of the Fourdrinier wire has been disposed over the couchroll, for example, as already described, the operators on either side ofthe assembly pay out the wire by rotating the wheel 2| until the wirehas been entirely unwound (the cranenot shownmoving toward the head boxduring this operation), whereupon the installation of the wire iscompleted in known manner. To accommodate poles of varying size a filletpiece 25 may be placed between one of the poles and the end surface ofthe housing I5.

I claim:

A pulley or sheave device for facilitating change of wire on aFourdrinier machine, comprising a sheave proper adapted to receive asupporting cable, a device attached thereto for manually rotating thesheave, and a housing concentric with said sheave accommodating the endsof a pair of superimposed poles upon which the wire is reeled, and meansfor securing said pole ends within said housing.

JOHN A. HOOVER.

